Central Carolina Septic Tank

The company installed a septic tank at my home. It is experiencing issues and the company will not return calls.A septic tank was installed at my home in 2015. We are experiencing issues with odors outside our home from it and believe it needs to be looked at. I left a message for the company on 5/6/2015. My husband left messages on 5/6/2016 and 5/7/2016. We have received no response.Desired SettlementWe need the septic system repaired so we no longer have a foul odor from the system. Septic systems shouldn't emanate any smells unless something is going wrong.